Magnetic recording media
US4474832A · kind A · utility
7Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Mar 16, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for preparing a magnetic recording medium is disclosed. The method involves forming a thin magnetic layer on a polyester film by means of a vapor deposition or plating method, continually moving the film while maintaining it at a tension of 400 g/mm.sup.2 or less and contacting the moving film with a heating device at a temperature within the range of 70.degree. to 200.degree. C. for a period of time within the range of 0.1 to 30 seconds. The method provides a non-binder type magnetic recording medium having improved skew characteristics without formation of curls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.